Once in a while I need access to USGS topographic maps. I’ve had a hard time finding them online. But now National Geographic has a quick and easy way to get access to them. You can find a description online at https://petapixel.com/2016/08/06/nat-geo-launches-free-website-printing-detailed-topographical-maps/. The portal is at https://www.natgeomaps.com/trail-maps/pdf-quads.
